87199647507 has 36 divisors (see below), whose sum is σ = 147059998176. Its totient is φ = 49644433440.

The previous prime is 87199647439. The next prime is 87199647517. The reversal of 87199647507 is 70574699178.

87199647507 is a `hidden beast` number, since 8 + 71 + 9 + 96 + 475 + 0 + 7 = 666.

It is not a de Polignac number, because 87199647507 - 2¹⁰ = 87199646483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (87199647517) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 245308 + ... + 484329.

Almost surely, 2^87199647507 is an apocalyptic number.

87199647507 is a deficient number, since it is larger than the sum of its proper divisors (59860350669).

87199647507 is a wasteful number, since it uses less digits than its factorization.

87199647507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729928 (or 729918 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 87199647507 in words is "eighty-seven billion, one hundred ninety-nine million, six hundred forty-seven thousand, five hundred seven".